£320,000 Mortgage Repayments (2026)
A £320,000 repayment mortgage at 5% over 25 years costs £1,871 a month. The table below covers rates from 3.5% to 6% and terms from 15 to 35 years.
| Rate | 15 yrs | 20 yrs | 25 yrs | 30 yrs | 35 yrs |
|---|---|---|---|---|---|
| 3.5% | £2,288 | £1,856 | £1,602 | £1,437 | £1,323 |
| 4% | £2,367 | £1,939 | £1,689 | £1,528 | £1,417 |
| 4.5% | £2,448 | £2,024 | £1,779 | £1,621 | £1,514 |
| 5% | £2,531 | £2,112 | £1,871 | £1,718 | £1,615 |
| 5.5% | £2,615 | £2,201 | £1,965 | £1,817 | £1,718 |
| 6% | £2,700 | £2,293 | £2,062 | £1,919 | £1,825 |
Different amount or rate? Use the mortgage repayment calculator.
How it's worked out
Figures use the standard repayment-mortgage formula (capital and interest, equal monthly payments): payment = loan × monthly rate ÷ (1 − (1 + monthly rate)−months). They assume the rate stays the same for the whole term — in practice you'll re-fix every few years. Product fees, valuation fees and overpayments are not included.
FAQ
What are the monthly repayments on a £320,000 mortgage?
At a 5% interest rate over 25 years, a £320,000 repayment mortgage costs £1,871 a month — £561,206 repaid in total over the term. At 4% the same mortgage is £1,689 a month, and stretching to 30 years at 5% lowers the payment to £1,718.
How does the term length change the cost?
Longer terms cut the monthly payment but increase the total interest dramatically. On £320,000 at 5%, a 15-year term costs £2,531 a month (£455,497 total), while a 35-year term costs £1,615 a month but £678,300 in total — the longer term repays far more interest for the same loan.
Are these figures exact quotes?
No — they are standard repayment-mortgage arithmetic (capital and interest, fixed rate for the whole term) to help you budget. A real offer depends on your deal period, fees, loan-to-value and credit profile, and rates change when a fixed deal ends. Interest-only mortgages cost less per month but repay none of the capital.